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12 Gauge Remington 870 7-Round Mag Extension
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Brand: Advanced Technology SMR0700
Item: 37994
UPC: 758152507006

7 Shot Remington 870, 1100 and 11-87 12 Gauge Mag Extension

The ATI magazine extension Increases the capacity of your shotgun to 7 Rounds. Made of virtually indestructible DuPont Extreme Temperature Glass Reinforced Polymer injection molding over a steel connecting nut, the ATI mag extension will not rust or dent. The minimum barrel length for the 7 Shot extension is 18.5". Includes a new spring. Easy Installation, simply replaces your magazine cap nut.

Specifications and features:
7 round mag extension (adds 2 shells in magazine)
Fits Remington 12 gauge 870 shotguns
18-1/5" minimum barrel length
Includes spring
Glass-filled nylon
Injection-molded
Rustproof & dentproof
No gunsmithing required

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Customer Reviews

Most Helpful Customer Reviews

0 of 0 people found the following review helpful
3.0 Rating Decent product - 6/7/2008
Reviewer: Paul
The ATI mag extensions do their job and the replacement spring has enough push. The only downside is if you plan on mounting a tactical light from the extension. By the time you get the clamp tight enough to keep it in place, you've squeezed the nylon extension enough to keep you from loading the last shell, or worse, the shell at the end of the extension will be stuck in place and spring can't go anywhere. The plastic extension itself looks a bit cheap on an otherwise sweet gun.
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0 of 0 people found the following review helpful
4.0 Rating Verry Happy - 2/27/2009
Reviewer: Dustin
This mag extension works flawlessly on my 870 express. I wanted to give it 4 bullets because it does look cheap but then again it is cheap. But the point is more shells down range right. So 5 it is. Thanks CTD for the good product good price and fast service.
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0 of 0 people found the following review helpful
5.0 Rating GREAT - 4/27/2009
Reviewer: Patriot
This product is friggin awesome with a 20in barrel and a folding ati stock. Good stuff ctd. I am spreading the word.
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0 of 0 people found the following review helpful
1.0 Rating Crappy - 5/13/2009
Reviewer: Josh
Well-made product, but does not work. The product does not take into account the fact that the shell follower must enter the original magazine tube at a specific angle, otherwise it gets hung up. This product does not work for the Remington 870 Express.
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0 of 0 people found the following review helpful
3.0 Rating Not Compatable with NEF Pardner Pump - 6/6/2009
Reviewer: Whiskey Tan9o
This item is NOT compatable with the NEF Pardner Pump 12-Ga Shotgun. (18.5 inch barrel, 5+1 Mag Tube) The extension goes a full 2~3 inches past the barrel! However, the extension DOES thread on to the existing mag tube correctly. I would not recommend this item for any Remington 870 Clones. (Might work with a 20 inch barrel though..... just a thought) Anyway, I hope this review helps with anyone considering on purchasing this item for a Remington 870 Clone.
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12 Gauge Remington 870 7-Round Mag Extension
12 Gauge Remington 870 7-Round Mag Extension
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